<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        /* 5. 通配符选择器 */
        /* 将所有标签改为绿色，字体改为40像素 */
        * {
            color: green;
            font-size: 40px;
        }
    </style>
</head>
<body>
    <div class="font32">我是一个div, class为font32</div>
    <div><a href="#">我是一个div</a></div>
    <ul>
        <li>aaa</li>
        <li>bbb</li>
        <li><a href="#" id="a1">ccc</a></li>
    </ul>
    <ol>
        <li>1111</li>
        <li>2222</li>
    </ol>
    <button id="submit">提交</button>
</body>
</html>